About TagThatPet.com

TagThatPet.com makes the QR code that goes on a pet tag, with your contact information encoded inside the code itself. You choose one of two modes: tel:, which dials your number the moment a finder scans it, or a minimal vCard, which shows the pet's name on the finder's phone as "Biscuit (lost pet)" alongside up to two phone numbers and a short note. The generator verifies that the code actually scans, and you download it. No account, no subscription, no server behind the code — and therefore nothing that can expire.

Two audiences, one code

The first audience is pet owners: type a name and a number, print an insert, done. The second is makers — the Etsy resin crafters and small tag sellers who turn a printed code into something a dog actually wears. The site arms them rather than competes with them. Commercial use is welcome: sell tags made with these codes, no attribution required. The maker page and the insert spec cover what a code needs from the physical tag — size, contrast, an untouched quiet zone — and stop there. The site specifies the insert, never the encasement. Epoxy, glass, laminate, lockets: the epoxy guide documents one proven method, and it is explicitly not the only one.

Why the contact lives inside the code

Many commercial QR pet tags encode a web address that points at a URL shortener or a third-party profile service. That link is a dependency, and the industry has already watched it fail: when Google shut down its goo.gl shortener, printed codes that relied on it stopped resolving. The same thing happens more quietly every time a tag company folds or a subscription lapses — the tag survives, the code on it goes dead.

A code carrying a tel: or vCard payload has no such dependency. The finder's phone reads the contact information directly out of the printed squares; nothing is looked up, so nothing can be shut down. The trade-off: because the contact is fixed in ink, it cannot be edited later — a new phone number means printing a new insert.

The verified-scannable promise

Every code is decoded by machine before you can have it. The tool rasterizes your code at three sizes — 800, 1200, and 1600 pixels — and runs the jsQR decoder on each. The download stays blocked until at least two of the three decode to an exact byte match against what you typed. A code that leaves this site has already been read back, not merely drawn.

Scanning in software is necessary but not sufficient, so the tools are equally blunt about physics. A module needs roughly 0.5 mm of print to scan reliably. On a circular insert the code square sits inscribed — side equals diameter divided by the square root of two, so a 25 mm disc yields 17.7 mm of code — while a square insert keeps 94 percent of its width. In practice, tel: mode encodes at QR version 1–2, the chunkiest grid, and fits a 25 mm circle; a loaded vCard generally needs 32 mm and up on circles, or a square insert. The size presets — 20, 22, 25, 28, 32, and 38 mm — show this per size and refuse to pretend otherwise. The quiet zone, four modules of white on every side, is part of the code and lives inside the printed square, so cut lines never touch it. When you need copies, the insert sheets batch-print one verified code up to 60 times on A4 or US Letter with hairline cut guides and a printed reminder to print at 100 percent scale. The full verification pipeline is documented on the methodology page.

Why nothing leaves the browser

Your phone number, your pet's name, and whatever you put in the note are encoded on your own machine. The pages are static files; everything runs client-side in your browser, and nothing you type is uploaded, stored, or seen by us. There are no accounts because there is nothing an account would do. That is a property of the architecture, not a promise about our conduct. Details are in the privacy policy.

What it is not

A QR tag is a recovery aid, not GPS. It does not track your pet, report a location, or alert you to anything; it works only when a person finds the animal, scans the code, and calls. We say this plainly and ask makers to say it plainly to their customers. The site is also not a registry: there is no profile for your pet, no database entry, no record on our side that a tag exists at all. If the tag helps a finder reach you one minute sooner, it has done its whole job.

Who publishes this

TagThatPet.com is published by Sumvia, the team behind the Sumvia.net tool network. Corrections and questions are welcome through the contact page — a code that fails to scan on a real phone is the report we most want.